±2°C Digital temperature sensor with I2C/SMBus capable of 1.4V in WCSP


Product details


Local sensor accuracy (Max) (+/- C) 2 Type Local Operating temperature range (C) -40 to 125 Supply voltage (Min) (V) 1.4 Interface type I2C, SMBus Supply voltage (Max) (V) 3.6 Supply current (Max) (uA) 3 Temp resolution (Max) (bits) 8 Features One-shot conversion Remote channels (#) 0 Addresses 8 Rating Catalog open-in-new Find other Digital temperature sensors

Package | Pins | Size

DSBGA (YFF) 4 1 mm² .8 x .8 open-in-new Find other Digital temperature sensors


  • Multiple Device Access (MDA):
    • Global Read/Write Operations
  • I2C™ and SMBus™-Compatible Interface
  • Resolution: 8 Bits
  • Accuracy: ±1°C Typical (–10°C to 100°C)
  • Low Quiescent Current:
    • 3-µA Active IQ at 0.25 Hz
    • 1-µA Shutdown
  • Supply Range: 1.4 V to 3.6 V
  • Digital Output
  • 4-Ball WCSP (DSBGA) Package

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The TMP103 is a digital output temperature sensor in a four-ball wafer chip-scale package (WCSP). The TMP103 is capable of reading temperatures to a resolution of 1°C.

The TMP103 features a two-wire interface that is compatible with both I2C and SMBus interfaces. In addition, the interface supports multiple device access (MDA) commands that allow the master to communicate with multiple devices on the bus simultaneously, eliminating the need to send individual commands to each TMP103 on the bus.

Up to eight TMP103s can be tied together in parallel and easily read by the host. The TMP103 is especially suitable for space-constrained, power-sensitive applications with multiple temperature measurement zones that must be monitored.

The TMP103 is specified for operation over a temperature range of –40°C to 125°C.

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Technical documentation

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Type Title Date
* Data sheet TMP103 Low-Power, Digital Temperature Sensor With Two-Wire Interface in WCSP datasheet (Rev. D) Dec. 21, 2018
Technical article How to choose the right thermistor for your temperature sensing application Feb. 13, 2020
Technical article How to enable thermal safety for automotive infotainment and cluster systems Oct. 15, 2019
Technical article Driving industrial innovation with small-size sensors Sep. 12, 2019
Application note Temperature sensors: PCB guidelines for surface mount devices (Rev. A) Jan. 18, 2019
User guide TMP103EVM User Guide (Rev. A) Apr. 18, 2018
Technical article Real-time temperature sensing with dual-mode connectivity Nov. 03, 2016
User guide SM-USB-DIG Platform User Guide Jan. 14, 2011

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

document-generic User guide

The TMP103EVM is a simple EVM designed to allow full evaluation of the TMP103 device. The EVM has eight total TMP103's installed. Each device is tied together but has a separate hardware address. This allows the user to take advantage of the I2C general call described in the TMP103 product data (...)

  • Simple, easy to use design.
  • 8 total sensors installed.
  • Convenient test points for monitoring or supplying external I2C signals.

Software development

Linux Driver for TMP103
TMP103SW-LINUX The Linux driver support the TMP103 Temperature Sensor. The Linux driver supports communication through the I2C bus and interfaces with the Hardware Monitoring sub-system.
Linux Mainline Status

Available in Linux Main line: Yes
Available through N/A

Supported Devices:
  • tmp103
Linux Source Files (...)
Analog signal chain (ASC) studio
ASC-STUDIO To help simplify configuration challenges and accelerate software development, we created ASC studio, an intuitive graphical utility for configuring all aspects of TI sensors and in the future other signal chain components.  ASC studio helps you select configuration parameters visually so that (...)
  • Interactive and intuitive graphical tool for enabling, configuring and generating initialization and runtime code for TI sensors and other signal chain components
  • Real-time code preview is available allowing developers to see what code is being generated based on GUI inputs
  • Contextual documentation is (...)
SBOC392A.ZIP (4498 KB)
SBOC393A.ZIP (6212 KB)

Design tools & simulation

SBOM450.ZIP (30 KB) - IBIS Model
SBOR013.PDF (24 KB)

Reference designs

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TIDA-00218 This TI Design uses Texas Instruments' Hall sensing technology to provide a solution for knowing how much AC current is flowing through a wire without any physical intervention. TIDA-00218 implements a flux concentrator to concentrate the flux around the AC current-carrying wire, rather than letting (...)
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672-W, Highly Integrated Reference Design for Automotive Bidirectional 48-V/12-V Converter
TIDA-00558 Today's automotive power consumtion is 3KW, which will increase to 10KW in next 5 years and 12V batttary is unable to provide that much power. 48-12V bi-directional convertor provides high power requirement solution with two phases each capable of running 28A.  This solution allows (...)
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SSD Power Delivery Reference Design
TIDA-00399 The TIDA-00399 design implements a complete power delivery solution for an SSD in the M.2 form factor. The TPS22954 load switch is used to limit inrush current and eliminate the need for a separate supervisor circuit on the system input. This design is tested and includes GUI, demo, and User's (...)
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Dynamic Field-Powered NFC for Data Logging Access Control & Security Applications Reference Design
TIDA-00217 This reference design is a sub-system design for NFC (Near Field Communication) and authentication.  This subsystem design is intended as a reference design for part authentication, access control, personal identification, battery-less sensor interface, security token transfer, and low power (...)
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Distance and Weight Measurement Using Inductive Sensing Reference Design
TIDA-00215 The Distance and Weight Measurement Using Inductive Sensing Reference Design is a sub-system design which converts a distance measurement to a weight measurement. This design is intended as a reference design for building automation and weigh scale applications. In mechanical systems, there are (...)
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CAD/CAE symbols

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